Exhaust-nozzle.



L. C. MOUNEY.

EXHAUST NOZZLE.

APPLIUATION FILED 11111.13; 1913.

190825701. Patented 1360.30, 1913.

2 SHEETS-SHBET l` COLUMBIA PLANOGRAPH C0., wAsHlNu-roN. D. c,

L. C. MOONEY.

EXHAUST NOZZLE.

* APPLIoATIoN FILED MAR. 1s, 191s..

PatentedD-ec. 30, 1913.

2 SHEETS-SHEET 2.

coLuMmA DLANQGRAPH co., WASHINGTON. D. c.

IUNTTED' STATES PATENT @FFTQE LAWRENCE C. MOONEY, OF MONTGOMERY, ALABAMA.

EXHAUST-NOZZLE.

f To all 207mm t may concern.'

' compression in the cylinders and a back suction thereinto which carry cinders and dirt into the valve chests and cylinders thus causing these parts to cut and wear excessively.

It also has for its object to improve the draft of the furnace by causing a circula tion of light gases to take place through the tiues of the boiler and over the fire where they are burned and add to the temperature of the furnace, thus tending to save fuel by the consumption of products which other wise would be lost. This circulation of gases takes place only when the engine is in operation and a large amount of steam is required, at other times, or when no steam is fed to the cylinders the gases are permitted to escape through the stack.

For a clearer understanding of the invention, attention is directed to the following detailed description and the accompanying drawings, in which- Figure 1 is a longitudinal vertical sectional view of a. locomotive front end provided with the improved exhaust nozzle. Fig. 2 is an elevation of the exhaust nozzle detached from the locomotive and shown on a larger scale. Fig. 8 is a top plan view of the same. Fig. i is a vertical transverse sectional view on the line 1 -4, Fig. 3. Fig. 5 is a horizontal sectional view on the line 5 5, Fig. a.

Tn the drawings, wherein like reference characters are used to designate the same parts in all the figures, 10 indicates the smoke box or arch of a locomotive which may be of any well-known construction divided into an upper or vacuum chamber A and lower or draft chamber B by a crown sheet 11, extending transversely across the smoke box 10 and connected to an upwardly inclined plate 12 attached to the wall of Specification of Letters Fatent.

Application filed March 13, 1913.

Patented Dec. 30, 1913.

serial No. 754,120.

the smoke box. A man-hole 13 is formed in the plate l2 and co-vered by a screen 1A as shown. The rear of the crown sheet is riveted to a transversely extending plate 15 projecting a short distance below the plate and up above the tcpmost fines 16 of the boiler, said plate having a rearward inclination as shown. Through the plate are formed a number of openings 17 for a purpose to be described later.

Mounted on the top of the smoke box l in the usual place and manner is a smoke stack 18 that projects into the smoke box and is there bolted to a downward extension 19 on the lower end of which is an outwardly flaring skirt 20. Projecting into the flaring skirt 20 from the bottom is a frustoconical thimble 21 the upper open end of which is of the same size or area as the lower end of the section 19 and spaced therefrom to form an annular passage way 22 between the thimble and the skirt. This annular passage is provided to admit by suction air and gases exterior of the thimble into the updraft pipe 19 which commingle with air and vapor constantly drawn upward through the bottom of said pipe and thimble by the action of the exhaust. Depending below and inclosing the frustoconical thimble 21 is a spark arrester 23 secured to the underside of the crown sheet 11. Beneath the smoke stack 1S in axial line therewith is the exhaust nozzle 24 comprising a body part 25 and a nozzle proper 26 between which is bolted the lower end of the spark arrester 23. The body 25 has a bottom iange 26a bolted to the saddle 27 extending between the cylinders of the engine through which saddle pass the exhaust ports 28 to the exhaust nozzle 24. Dividing the exhaust nozzle centrally into two equal chambers is a partition 29 which extends from the lower end of the body 25 nearly to its upper end and when in place is in line with the septum 40 between the exhaust ports. The inlets 30 of the exhaust nozzle are rectangular and have the same area and shape as the exhaust ports, thus enabling exhaust steam to pass into the nozzle freely and without compression, the body 25 of said. nozzle a short distance above the inlets being expanded or enlarged to permit the steam entering said body to expand and thus relieve the cylinders from compression and preventing back suction thereinto which would cause cinders to be drawn down through the nozzle and into the cylinders and valve chests to the destruction of those parts by grinding and cutting. The body 25 of the exhaust nozzle at its lower end just above the flange 26 is substantially square in crosssection from which point it gradually merges into a circular cross-section as clearly shown in Fig. 5, whereby steam may pass through the exhaust nozzle with very little friction and retardation.

he nozzle proper QG has a flange 31 on its lower end by means of which it is bolted to a Bange 32 on the top of the exhaust stand or body 25. At its upper end the nozzle is of less diameter than the rbody 25 but this its upper end has an outward flare or bevel 33 to permit easy escape of the steam. Surrounding the mouth of the nozzle shortly below its upper edge is a channel 34 to which live steam is fed through a pipe 35 from the front of the boiler within the cab, said pipe being connected by a valve 36 to the boiler in position to be controlled by the engineer for admitting steam to the channel 3e when such is desired. Projecting upwardly from the top of the channel 34 are a number of nozzles 37 having a slight inclination toward the axis of the nozzle so that steam emerging from the said nozzles will converge at a point between the top of the stack and the top of the fire box.

Centrally disposed within the mouth of the nozzle 26 is a deflector 38 rigidly connected to a bar 39 firmly secured to the top of the partition 29. The deiiector 38 is made in the form of two cones united at their bases and circular in cross-section, the connected bases of said cones lying in the plane of the top edge of the nozzle 2G. Bot-li conical surfaces of the deflector are made smooth so that steam in encountering the lower cone will pass over the same with little frictional resistance and be spread laterally as it passes upwardly into the thimble 21 and up draft pipe 19. The top conical portion of the deflector is also made smooth that cinders striking thereon will quickly rebound beyond the mout-h of the nozzle and not enter thereinto.

Exhaust steam entering the body of the nozzle through the ports 28 expands therein and cools; and as it passes out through the mouth of the nozzle is separated by the deflector 33 in its center so that guided by the conical bottom of said deflector and the beveled mouth 33 of the nozzle proper 26,Y

a blower for clearing the stack of smoke and heavier gases whenever they become sluggish and choke the stack to such an extent as to impede the draft on the fire in the furnace. rlhis blower when in use creates a forced draft through the furnace and quickly intensities the tire.

l/Vhat I claim is,-

l. An exhaust nozzle comprising a. hollow stand or body divided centrally by a vertical partition extending to the open bottom of the stand and forming an independent inlet from each exhaust port, said body being enlarged above the inlets to permit the expansion of steam and prevent compression within the cylinders, a contracted nozzle on the upper end of said body or stand-above the partition, and a rigid deflector in the center of said nozzle in the form of two cones united at their bases, the connected bases lying in the plane of the top of said nozzle.

2. An exhaust nozzle comprising a hollow stand or body divided centrally by a vertical partition extending to the open bottom of said body and forming an independent inlet from each exhaust port, said body being enlarged above the inlets to permit expansion of steam and prevent compression within the cylinders, a contracted nozzle on the upper end of said body or stand above the partition, and a rigid deiiector in the center of said nozzle in the form of two cones united at their bases lying in the plane of the top of the nozzle, a live steam channel surrounding said nozzle, and a plurality of outlet nipples en said channel directed upwardly and inwardly toward the axis of the exhaust nozzle.

3. An exhaust nozzle comprising a hollow stand o-r body divided centrally by a vertical partition extending to the open bottom of said stand and forming an independent inlet from each exhaust port, said body being enlarged above the inlets to permit expansion of steam and prevent compression within the cylinders, a contracted nozzle on the upper end of said body or stand above the partition, a rigid deflector in the center of said nozzle in the form of two cones united at their bases, a stem affixed to said partition rigidly supporting said detlector, a live steam channel surrounding the mouth of said nozzle, and a. plurality of outlet nipples on said channel directed upwardly and converging toward the axis of the exhaust nozzle.

4. An exhaust nozzle comprising a hollow stand or body divided centrally by a vertical partition extending to the open bottom of said stand and forming an independent inlet from each exhaust port, said body being en larged above the inlets to reduce steam friotion, permit expansion of the steam and pref vent back compression and suction within the cylinders, a contracted nozzle on the upper end of said loody or stand above the parmy hand in presence of two subscribing Wittitlicn,f1 and a rigidly suppoited doillole coninesses. ea e eetor projecting part y into t e mouth of the nozzle, said mouth having its edge LAWRENCE C MOONEY' 5 outwardly inclined substantially parallel to Vitnesses:

the under surface of the defi-lector. R. GUY SMITH,

In testimony whereo1 I have hereunto set CLAUDE HOLLIDAY.

Copies of this patent may be obtained for ive cents each, by addressing the Commissioner of Patents, Washington, D. C. 

